there was a warning notice in 2018 because of an episode in a school in kent that alerted schools to how to identify rac and to be aware of it. more guidance was issued in 2021 and 2022 about how to manage raac. and the expert advice at that point was that if it's not in a critical condition, then it's safe to use continue to use rooms that have provided the raac isn't in a critical condition. so just what is different about the type of concrete at the centre of all this? raac to give its full name, is reinforced autoclaved aerated concrete. it's a lightweight concrete that was used in roofs, floors and walls sacross floors and walls across europe between the 1950s and 1990s. raac is a cheaper alternative to standard concrete because it's aerated, or "bubbly". however it's less durable with a limited lifespan of around 30 years, and its structural behaviour differs significantly from traditional reinforced concrete. the health and safety authority says raac is now beyond its lifespan and may "collapse with little or no notice". let's get more now from our correspondent helena wilkinson who's at a school in south london the impact on those schools affected cannot be understated. absolutely, and there will be many parents across england thinking is it my children's school that might be affected by this. schools are being contacted by a caseworker, an individual caseworker assigned by the government and more than 100 and affected by this and will have to either partially close or have to fully close but a full list of schools has yet to be released by the government and there will be many parents who will be wondering at the children's school is affected. the government says regarding the iced at what parents to hear from regarding the iced at what parents to hearfrom head teachers regarding the iced at what parents to hear from head teachers first. regarding the iced at what parents to hearfrom head teachers first. we are that the corpus christi catholic primary school and brixton, the school itself is just across the road and the building is fine and thatis road and the building is fine and that is where the younger pupils will be able to return at the start of the academic year next week but this building behind us, somewhere behind they are on the roof of the junior site they have confirmed that they have found concrete and what will happen, they have put an plans because parents were told a couple of weeks ago this was an issue but this part of the school will be closed whilst work is carried out, how long that will take a do not know but pupils and their section of the school will have to next week when term starts go to a different location around 1.5 miles away from here and we have spoken to a parent with one childhood goes to the school here on the part of the building which is fine but a daughter of which goes to the junior part and she is great to have a double drop—off and pick—up and logistically for many parents that will cause many issues. a lot of logistical problems for parents but also many still waiting to hear whether there school is affected by this. thank you. live now to.... daniel kebede, teacher and general secretary of the national education union the first question is the timing could not be worse for schools affected, what kind of impact as this having the schools and families. . , this having the schools and families-— this having the schools and families. ., , ., ., families. imagine being a head teacher now, _ families. imagine being a head teacher now, this _ families. imagine being a head teacher now, this week - families. imagine being a head teacher now, this week has - families. imagine being a head - teacher now, this week has already stressful for school staff, making final preparations for a new school year and at the 11th hour you get informed you will have to close part of your school or it will have to close, a few days including the weekend to find alternative provision for possibly hundreds of children, will they be taught, winners the funding coming from to support with this. it is highly problematic and at the not have to be this way, the government are talking about this like it is a new crisis but it simply is not the case, we have known about the issues of school buildings for the best part of a decade or more and they have failed to act. the government sa s a have failed to act. the government says a beam _ have failed to act. the government says a beam collapse _ have failed to act. the government says a beam collapse of— have failed to act. the government says a beam collapse of the - have failed to act. the government | says a beam collapse of the summer is what prompted them to tell schools not previously deemed high risk that they may need to close buildings so something the schools minister told the bbc it was something that happened over the summer and could not be helped in terms of timing. that summer and could not be helped in terms of timing.— terms of timing. that is dishonest at best. these _ terms of timing. that is dishonest at best. these schools _ terms of timing. that is dishonest at best. these schools will- terms of timing. that is dishonest at best. these schools will largely belt to rebuild post—war britain using cheap material everyone knew had a 30 year shelf life, this crisis has not been sprung on government by surprise, there was evidence of riffs crumbling in 1995, what has been going on as a calculated neglect and lack of political will to invest in education. what we have seen since 2010 as the government has slashed the schools buildings budget and the amount of underinvestment stands at 34 amount of underinvestment stands at 3a billion pounds. this is a crisis made by government. in 2010 michael gove cut the building schools for the future programme saying it was wasteful but what is wasteful now as the waste of children's education being severely disrupted through this government neglect. mi this government neglect. ali reassured by the fact the schools minister has told the bbc the government boasts foot the bill of costs of temporary accommodation. we costs of temporary accommodation. - need further clarity on that, it is our position that there should not be any excess spend taken from existing school budgets. the guidance said one thing last eight and on the issue of temperate school buildings and today it is saying another thing. what we need is nick gibbs to clarify the position on the funding for schools.— gibbs to clarify the position on the funding for schools. thank you. as alwa s on funding for schools. thank you. as always on the _ funding for schools. thank you. as always on the bbc— funding for schools. thank you. as always on the bbc website - funding for schools. thank you. as always on the bbc website we - funding for schools. thank you. as | always on the bbc website we have funding for schools. thank you. as i always on the bbc website we have a very clear life page set out by our reporters and correspondence and it is updated minute by minute to bring you the latest on whatever information we have about which schools are affected, which areas they are in the so if you are worried about what is happening you can go to the bbc website for all the latest information. tens of millions of people in southern china are bracing themselves for the arrival of super typhoon saola. experts say saola will bring winds gusting at more than two hundred kilometres per hour, that's 125 miles per hour. the governor of guangdong province called for what he called a �*near—war state' to battle the typhoon. it's expected to make landfall along the coast near hong kong sometime late on friday or early saturday. 0ur weather presenter sarah keith—lucas has more. we have seen a very busy spell and the typhoon season with more to come. you can see saola rotating, it is a large typhoon moving gradually closer to the coast of the south—west of china approaching hong kong, it will probably be the worst typhoon to impact hong kong in five years and following closely will be the next typhoon pushing in to taiwan but lets look at the track of typhoon saola and it will move close to the coast of hong kong, could be about 300 millimetres of rain falling over the mountainous areas before moving back to the south china sea. looking at the rainfall, the green colours indicate the torrential rainfall, very close to hong kong over the next 24—hour was but notjust the rain, strong winds from the east pushing up the sea—level in the region so we could see coastal inundation as the sea rises around three metres compared to normal, pushing to the south—west but you can see the next storm system lining up which will push across taiwan a potentially second landfall in a similar area in southern china next week so the combination of the heavy rainfall, strong winds and the coastal inundation that will mean some very severe weather across the region over the next few days. live now to hong kong and our reporter martin yip bring us up—to—date about what is being expected by authorities because this looks like it will be a pretty brutal typhoon.— because this looks like it will be a pretty brutal typhoon. indeed, the government _ pretty brutal typhoon. indeed, the government have _ pretty brutal typhoon. indeed, the government have said _ pretty brutal typhoon. indeed, the government have said on - pretty brutal typhoon. indeed, the| government have said on thursday they have extra police, hundreds of them in place to tackle aftermath and at this moment we are talking about the typhoon crossing or passing hong kong 30 kilometres outside, less than 20 miles so the worst moment in the coming hours and be my tesy raising the signal further to the top one link signal number ten, typhoon saola unpowered with a hurricane and that might bring tidal waves up to three metres at victoria harbour and other areas might see five metres of tidal waves so flooding might be imminent for some areas so people are standing by from the government, rescuers to bring people out of the need to and already people panic buying and supermarkets yesterday and this afternoon. ., ., ,., . afternoon. you mentioned panic bu inc, afternoon. you mentioned panic buying. but _ afternoon. you mentioned panic buying, but generally _ afternoon. you mentioned panic buying, but generally what - afternoon. you mentioned panic buying, but generally what is i afternoon. you mentioned panic. buying, but generally what is being done to prepare the area for the typhoon by the hong kong government. they have these extra resources, most importantly the helicopters but the app always there, the government agency flying service for transport and rescue so they will be standing by now if anything happens and take people out of harm. there will be extra resources to the move following trees because last time in 2018 during the last typhoon so many trees fell, one of the worst hong kong has seen for years because of fallen trees and blocked roads so there will be extra resources for that this time. let's take you to pakistan now — where several members of the family of a man who police in the uk want to question over the death of his daughter — say that they have been illegally detained. the investigation in pakistan centres on the death of ten year old sara sharif — who was found dead in woking in the uk on the 10th of august. herfather urfan, his partner and brother travelled to pakistan the day before sara's body was found. police in pakistan have been searching for the trio — and have now been accused by their relatives of holding them without any legal justification while doing so. 0ur correspondent caroline davies has more. this is the second time that the pakistan based family of irfan sharif have accused the pakistan police of illegally detaining them during questioning. now, the first time this happened, the pakistan police said that they wouldn't arrest two of sharif�*s pakistan based brothers. but we haven't heard the police response yet. that is due to come on monday. of course, the background to all of this, the reason why the family are being questioned is trying to find the location of irfan sharif, his partner, and his brother faisal malik. that's in relation to their investigation back in the uk of what happened to sara sharif, the ten year old girl whose body was found in a house in woking on the 10th of august. the surrey police have been very clear that they want to question these three individuals. at the moment there is no arrest warrant out for them and they are not currently named as suspects. now also appearing outside of the court today, we found irfan sharif�*s father, mohammed sharif. he spoke to the bbc and he told us that sara sharif had visited pakistan on a couple of occasions. he described her as being a lovely girl that was much loved by the family. now he has said to us that he does not know the location of our sharif or faisal malik. and the search continues. this is bbc news. let's look at some other stories making news one of the uk's biggest mortgage lenders say house prices have seen their biggest annual fall since 2009. the figures from nationwide show prices dropped by 5.3% lower than the year before. it said higher borrowing costs for buyers had led to a slowdown in activity in the housing market. concerns are being raised that blood cancer patients are facing round trips of 200 miles or more to access some of their care in argyll. charity blood cancer uk said vulnerable patients are making long journeys after the loss of some local services in 0ban. nhs greater glasgow and clyde say virtual consultations are available, but in—person appointments are at a centre in glasgow. a welsh rally has been recognised for its environmental sustainability by formula 0ne's governing body. race organisers said it's the first event to fully offset the emissions of all competing vehicles. it is the only uk rally to receive fia's environmental accreditation, two years in a row. you're live with bbc news. south africa's president cyril ramaphosa has called for urgent action to tackle the problems of housing in inner—city areas — after 7a people died in a fire injohannesburg. the cause of the blaze has not yet been established. it's been claimed that many of the residents were migrants, who were renting rooms from criminal gangs who had taken over the former industrial building. 0ur correspondent shingai nyoka sent us this update from johannesburg. a day after the fire broke out emergency services are still at the scene conducting one final sweep in search of remains. and the families are also still here in search of answers. and some of that trauma is visible on their faces. some of them bear the physical scars of the events of yesterday broken bones, head injuries. over 70 people are now confirmed to have died, and the grim task of identifying them is underway. but many of the relatives here say that their relatives are still missing and they don't know whether they made it out alive. the south african government has pledged to assist the survivors, but it's a very difficult situation for many of them because they are undocumented migrants and so it's unclear whether they will come forward to get that assistance. and so in the second day after the fire, a lot of people here are unsure about what happens next. large parts of england are without rail services today, as thousands of train drivers take part in the latest strike in their long—running pay dispute. members of the aslef union have rejected proposals for their pay to increase by four percent, two years in a row, in return for changes to ways of working. drivers will also ban overtime on saturday, coinciding with a strike by the rail, maritime and transport union in its dispute over pay, jobs and conditions. so what effect will these strike have on businesses? lets now talk to tom waldron—lynch of nottingham hospitality association that supports hospitality businesses in the city. how does the strike action impact business? disruption like this is very unhelpful, we are trying to rebuild businesses after a very difficult couple of years, huge increases and are cost base and anything that threatens that is very unhelpful. not come in particular has attracted over 30 million visitors in the past year and we need that to continue to grow in order to look after our teams and to employ, keep the employment of the 20,000 people that work in the city and county so i am afraid it is not great for us. do ou afraid it is not great for us. do you have _ afraid it is not great for us. do you have any sympathy for those rail workers who are saying their pay and conditions are in dispute and they want to watch out because they are not happy with what they are being offered. . ., ., ., offered. there are a lot of different _ offered. there are a lot of different parties _ offered. there are a lot of different parties to - offered. there are a lot of different parties to the . offered. there are a lot of - different parties to the dispute and clearly they need to get around the table and resolve this. as an economy both locally and nationally we have a lot of challenges that are well liked and knows programmes like your own and the last thing we need is the real network closing down every couple of weeks because it costs everybody money notjust hospitality, a lot of retailers, small cathy is relying on businesses and we are all missing out. what measures do businesses take to manage this impact? the key for us as we want to try to work with our guests and clients to make sure they can move their bookings effort needed. i am afraid thatis bookings effort needed. i am afraid that is little we can do to mitigate a real strike, what happens as more people drive which is not what we want is a country as we move towards a green agenda, edward b better left more people arrived by rail and tram and bus. given these strikes have become a regular occurrence, what do you think is the way forward? for better or worse we have learned to deal with a lot of disruption over the past three years, notjust unique to hospitality and iama afraid we have to deal with the reality and front of us. my original point is all the parties need to get around the table and find a solution. we need to develop our local authority and spread the word from the south of england and to the provinces and we need a reliable and functioning real network to do that. thank you. one of the world's rarest turtles is settling into her new home after she was found, washed up and freezing cold, on a beach in north wales. tally — as she has become known — is thought to have been swept four thousand miles across the atlantic by strong currents. now she's back in warmer climes after a major rescue which involved the raf. simonjones has the story. back home in texas and straight back in the water. tally can truly be described as a well—travelled turtle and an extremely lucky one, too. alive today, thanks to the kindness of strangers. this is her incredible story. it was two years ago that the turtle was found washed up in north wales, named tally after talacre beach, where she was spotted by a dog walker. my dog was making a bit of a fuss over what i thought was a pile of seaweed and then walked over and obviously saw that it was a turtle. initially thought that it was dead — unfortunately but still thought it's a bit weird for a turtle to be in wales on tahlequah beach. i don't see many turtles walking the dog usually. the experts at anglesey sea zoo were called in to try to nurse tally back to health, but there was no guarantee she would survive. she'd normally live in water temperatures of 2a degrees, so the eight degrees of the sea off wales meant her body had started shutting down. but day—by—day, she grew stronger. she got her appetite back. eventually, it was determined she was well enough to go home. tally is a kemp's ridley turtle, a critically—endangered species mainly found in the gulf of mexico. but young turtles can sometimes be swept across the atlantic by the gulf stream. that's how tally ended up on the beach in talacre. but her 4,000—mile journey home all the way to texas was a military operation. the raf helped transfer tally from anglesey to heathrow for her onward flight. a rescue charity described the mission as the furthest and most complex they have ever been involved in, 22 hours of travel in total but months in the planning. she was accompanied on herjourney by her rescuers. tally�*s immediate home is now houston zoo, but the plan later this month is to release her back into the sea in the gulf of mexico. it's hoped she will help ensure the survival of her species and she'll be fitted with a tracking device, meaning we may not have heard the last of tally�*s amazing travels. simon jones, bbc news. hello there. the 1st september and meteorologically speaking, the first day of autumn. now, this morning, it may have felt a bit autumnal for some of us. we had some mist and fog out there first thing this morning, but that's pretty much now cleared away and we're looking at some fine weather for the rest of today. low pressure yesterday brought us some outbreaks of rain, but higher pressure builds in as we go through the weekend and indeed into the start of next week, as well. what does that mean? well, it means for most of us, it's going to be dry. there'll be some lengthy spells of sunshine and it's going to turn warmer, as well. but for the rest of today, still some cloud across northern ireland, southern scotland, the far north—northeast of england. a few spots of rain here. showers developing elsewhere across england and wales in between some sunshine. largely dry across scotland this afternoon and maximum temperatures, 17, 18 degrees here, up to about 22, 23 celsius in the south east of england. now, through this evening tonight, any of those showers will tend to fade away. and then really most of us looking at some clear skies, but beneath those clear skies, there'll be some patches of mist and fog forming once again. quite a mild night for england and wales, 12 to 1a, a bit chillier across scotland, especially in the countryside. temperatures down into fairly low single figures. so saturday morning, yes, you might wake up to some mist and fog, but that will generally clear away. and for most, it's a dry day with that sunshine. a few showers across south wales and through southern areas of england, those will be very isolated, though. so saturday afternoon, 21 to 2a degrees. on sunday, almost a repeat performance, one or two patches of mist and fog first thing. there will be further cloud moving its way into the far north and northwest of scotland. some outbreaks of rain here. most though dry, sunny and warm. temperatures widely in the low to mid 20s. a bit chillier, though, where you've got the cloud and outbreaks of rain. now, this is the jet stream. we've been talking about this a lot in the weather recently. it's been positioned across the uk, giving us rain. as we go through in the next few days, it's arching to the north of the uk and that allows warmer air to spread in from the south. so into next week, look at this, plenty of fine and sunny weather around. temperatures potentially in the mid to high 20s, maybe 30 celsius the middle of next week, before a bit more unsettled by friday. bye— bye. this is bbc news. the headlines... calls for the uk government to "come clean" on the number of school buildings built with concrete prone to collapse. paris becomes the first european capital to ban electric scooters for public hire after five years of controversies. a major record label has signed for the first time with a digital popstar, whose voice is generated by artificial intelligence. a court has sentenced two members of the far—right proud boys militia to long prison terms for storming the us capitol building in january 2021. joseph biggs, a former leader of the proud boys, was given 17 years, one of the longest sentences among the hundreds convicted for the capitol attack. prosecutors say biggs was a key figure in the organised attempts to forcibly overturn presidentjoe biden's 2020 election victory. let's hear now from norman pattis, the attorney who represented the proud boys leaderjoseph biggs. after the sentencing he drew the link between his client —— and donald trump — let's listen to what he said... i think there is a broader country crisis of legitimacy that's going on right now.